A. C. Gade
Acoustics Lab., Tech. Univ. of Denmark, Bldg. 352, Lyngby, DK 28000, Denmark
John S. Bradley
Natl. Res. Council, Ottawa, ON K1A 0R6, Canada
A measurement tour of nine U.S. concert halls included acoustical measurements on the stage of each hall. Two teams (from the National Research Council of Canada, and the Technical University of Denmark) made measurements of the acoustical quantities suggested by Gade: the ``support'' family of measures describing the acoustical conditions for the musicians on stage. This paper compares the results from the two measurement teams and discusses the influence of hall designs. [Work partially supported by the Concert Hall Research Group.]